Solid-state effects in electron ejection by charged particles

Abstract

Collisions of swift ions with thin foils show several similarities and differences to those with gases. The differences, denoted “solid state effects”, are the subjects of this report. We will discuss examples of solid state effects observed through measurements of (i)convoy electrons, (ii)Rydberg electrons, (iii)binary electrons, and (iv)slow electrons, produced by ~100 keV/u−~MeV/u H+, H2+, Ho, Cq+, NH j+(j=0−4), and N2+ ions bombarding thin carbon foils.

A simple model calculation [Y.Yamazaki and N.Oda: Nucl.Instrum. Methods 194,415(1982)] shows that the cross section for capturing an electron into wake riding state is very small as compared with the competing process like ELC, ECC, and FETC. To get a reliable conclusion on the possibility of wake riding electrons, some special elaborative design of experiments will be necessary.Google Scholar